The correct answer is A) poverty and inequality.
The main reasons for social unrest and demands for reform in Latin America from 1950to 1970 were poverty and inequality.
Since most of the Latin American countries gained their independence from Spain, they have lived periods of political and economic instability that even nowadays have caused social movements that demand reformations. Specifically, in the period of 1950 and 1970, poverty and inequality were two important aspects of social demanding that were present in the governments of Central America and Latin America. Political issues in Chile, Argentina, Nicaragua, and Mexico had their origins in unbalance in economics and the suffering of the lower classes.